diff options
| -rw-r--r-- | drivers/staging/fsl-dpaa2/ethsw/ethsw.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c index 20c6326e5dee..d524e92051a3 100644 --- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c +++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c @@ -984,10 +984,17 @@ static int dpaa2_switch_port_vlans_add(struct net_device *netdev, int vid, err = 0, new_vlans = 0; if (switchdev_trans_ph_prepare(trans)) { - for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) + for (vid = vlan->vid_begin; vid <= vlan->vid_end; vid++) { if (!port_priv->ethsw_data->vlans[vid]) new_vlans++; + /* Make sure that the VLAN is not already configured + * on the switch port + */ + if (port_priv->vlans[vid] & ETHSW_VLAN_MEMBER) + return -EEXIST; + } + /* Check if there is space for a new VLAN */ err = dpsw_get_attributes(ethsw->mc_io, 0, ethsw->dpsw_handle, ðsw->sw_attr); |